diff --git a/apps/knowledge/serializers/document.py b/apps/knowledge/serializers/document.py
index 16e29aade..146ac89bb 100644
--- a/apps/knowledge/serializers/document.py
+++ b/apps/knowledge/serializers/document.py
@@ -561,7 +561,7 @@ class DocumentSerializers(serializers.Serializer):
             file = QuerySet(File).filter(source_id=self.data.get('document_id')).first()
             if not file:
                 raise AppApiException(500, _('file not exist'))
-            return FileSerializer.Operate(id=file.id).get(with_valid=True)
+            return FileSerializer.Operate(data={'id': file.id}).get(with_valid=True)
 
         def one(self, with_valid=False):
             if with_valid: